No. It is the reddest object in the Solar System. The second reddest object is Mars.
Sedna has no moons.
Mars
It appears that there is no atmosphere on Sedna.
Yes, there is a celestial object called Sedna (90377 Sedna), which is a dwarf planet candidate orbiting far beyond Neptune and Pluto. Its closest approach to the Sun is about 1.5 times the maximum for Pluto, with an extreme elliptical orbit varying from 76 AU to 975 AU.As the farthest identified object orbiting the Sun, Sedna takes about 12,000 Earth years to complete one orbit. It will reach its next closest approach to the Sun in the year 2075. Only the dwarf planet Eris is current farther from the Sun.Its size is estimated at approximately three-quarters the size of Pluto, or about 1,000 miles (1200-1600 km) in diameter.(For size comparison with Earth, Moon and Pluto, please see the link below)More on SednaSedna rotates very slowly. It takes at least 20 days to complete a rotation, maybe as long as 50 days. The gravitational pull of a moon would be the best explanation for this slow rotation. Almost all other minor bodies in the solar system rotate in a matter of hours. Pluto has a six-day rotation because it has a satellite, Charon. But Sedna has no moon.
no
sedna is located in the Oort cloud and is the farthest object from the sun that we have discovered yet.
it is the most distant object object known
It is the most distant object known
redder, reddest
The planet Sedna is not actually a planet, just a small lump of ice and rock. In fact Pluto, the ninth planet in our solar system, has just been downgraded and is no longer considered a planet. Because of Sedna's frigid temperatures, the team who discovered the object named it Sedna, after the Inuit goddess of the sea from whom all sea creatures were created
Reddest Red was created in 1992.
That is the correct spelling of "reddest" (most red in color).
redder, reddest
Not "a" Sedna; just "Sedna". Sedna is the Inuit goddess of the sea. Also, a dwarf planet named after this goddess.
Sedna
Sedna was named after the Inuit goddess of the sea. It was given this name because it is the coldest known object in the solar system.
Sedna has no moons.